我一直在使用 kotlin 在 android studio canary 5 上开发应用程序。我正在使用 when 语句来验证注册表单是否有效。
else if(registering) when {
email.text == null -> email.error = "Enter Email!"
!isValidEmail(email.text) -> email.error = "Invalid Email!"
password.text == null -> password.error = "Enter Password!"
password_conf.text == null -> password_conf.error = "Re-enter Password!"
password_conf.text.toString() != password.text.toString() -> password_conf.error =
"Re-enter Password!"
password_conf.text.toString() != password.text.toString() -> password_conf.error = "Passwords Don't Match!"
name.text == null -> name.error = "Enter Full Name!"
branchSelected == "Branch" ->{
val errorText = branch.selectedView as TextView
errorText.error = ""
errorText.setTextColor(Color.RED)
errorText.text = getString(R.string.select_branch)
}
phone.text == null || !isValidPhone(phone.text) -> phone.error = "Enter Valid Phone Number!"
!isValidReg(reg_number.text) -> reg_number.error = "Invalid Registration Number"
roll_number.text != null && !isValidRoll(roll_number.text) -> roll_number.error = "Enter Valid roll number!"
else -> {
createAccount(email.text.toString(), password.text.toString())
addDB()
}
}
行 password.text == null -> password.error = "Enter Password!" 由于某种原因不起作用。
我 90% 确定该行是正确的，因为 email.text == null -> email.error = "Enter Email!" 工作得很好，android studio 对变量进行颜色编码。
是否会因为 android studio kotlin 支持处于测试阶段或其他原因而发生错误？
更新:正如 JK Ly 所建议的，以下是电子邮件和密码的值:
(When I kept email empty)
email = {AppCompatEditText@5191} "android.support.v7.widget.AppCompatEditText{c15a402 VFED..CL. .F...... 79,242-1001,360 #7f09003d app:id/email}"
mBackgroundTintHelper = {AppCompatBackgroundHelper@5243}
mTextHelper = {AppCompatTextHelperV17@5244}
mAllowTransformationLengthChange = false
mAutoLinkMask = 0
mBoring = null
mBreakStrategy = 0
mBufferType = {TextView$BufferType@5245} "EDITABLE"
mChangeWatcher = {TextView$ChangeWatcher@5246}
mCharWrapper = null
mCurHintTextColor = 1627389952
mCurTextColor = -570425344
mCurrentSpellCheckerLocaleCache = null
mCursorDrawableRes = 17303397
mDeferScroll = -1
mDesiredHeightAtMeasure = 118
mDeviceProvisionedState = 0
mDrawables = null
mEditableFactory = {Editable$Factory@5247}
mEditor = {Editor@5248}
mEllipsize = null
mFilters = {InputFilter[0]@5249}
mFreezesText = false
mGravity = 8388627
mHighlightColor = 1711314568
mHighlightPaint = {Paint@5250}
mHighlightPath = {Path@5251}
mHighlightPathBogus = false
mHint = "Email"
mHintBoring = {BoringLayout$Metrics@5253} "FontMetricsInt: top=-50 ascent=-44 descent=11 bottom=13 leading=0 width=116"
mHintLayout = {BoringLayout@5254}
mHintTextColor = {ColorStateList@5255} "ColorStateList{mThemeAttrs=nullmChangingConfigurations=0mStateSpecs=[[16842910, 16842919], []]mColors=[-1979711488, 1627389952]mDefaultColor=1627389952}"
mHorizontallyScrolling = true
mHyphenationFrequency = 1
mIncludePad = true
mLastLayoutDirection = 0
mLastScroll = 0
mLayout = {DynamicLayout@5256}
mLinkTextColor = {ColorStateList@5257} "ColorStateList{mThemeAttrs=nullmChangingConfigurations=0mStateSpecs=[[]]mColors=[-16738680]mDefaultColor=-16738680}"
mLinksClickable = true
mListeners = null
mLocalesChanged = false
mMarquee = null
mMarqueeFadeMode = 0
mMarqueeRepeatLimit = 3
mMaxMode = 1
mMaxWidth = 2147483647
mMaxWidthMode = 2
mMaximum = 1
mMinMode = 1
mMinWidth = 0
mMinWidthMode = 2
mMinimum = 1
mMovement = {ArrowKeyMovementMethod@5258}
mOldMaxMode = 1
mOldMaximum = 1
mPreDrawListenerDetached = false
mPreDrawRegistered = false
mPreventDefaultMovement = false
mRestartMarquee = false
mSavedHintLayout = {BoringLayout@5254}
mSavedLayout = null
mSavedMarqueeModeLayout = null
mScroller = null
mShadowColor = 0
mShadowDx = 0.0
mShadowDy = 0.0
mShadowRadius = 0.0
mSingleLine = true
mSpacingAdd = 0.0
mSpacingMult = 1.0
mSpannableFactory = {Spannable$Factory@5259}
mTempRect = {Rect@5260} "Rect(87, 305 - 91, 423)"
mText = {SpannableStringBuilder@5261} ""
mFilters = {InputFilter[1]@5289}
mGapLength = 10
mGapStart = 0
mIndexOfSpan = {IdentityHashMap@5290} size = 7
mLowWaterMark = 2147483647
mOrderSortBuffer = {int[9]@5291}
mPrioSortBuffer = {int[9]@5292}
mSpanCount = 7
mSpanEnds = {int[9]@5293}
mSpanFlags = {int[9]@5294}
mSpanInsertCount = 19
mSpanMax = {int[7]@5295}
mSpanOrder = {int[9]@5296}
mSpanStarts = {int[9]@5297}
mSpans = {Object[9]@5298}
mText = {char[10]@5299}
mTextWatcherDepth = 0
shadow$_klass_ = {Class@529} "class android.text.SpannableStringBuilder"
shadow$_monitor_ = -2077412599
mTextColor = {ColorStateList@5262} "ColorStateList{mThemeAttrs=nullmChangingConfigurations=0mStateSpecs=[[-16842910], []]mColors=[973078528, -570425344]mDefaultColor=-570425344}"
mTextDir = {TextDirectionHeuristics$TextDirectionHeuristicInternal@5263}
mTextEditSuggestionContainerLayout = 17367285
mTextEditSuggestionHighlightStyle = 16974923
mTextEditSuggestionItemLayout = 17367287
mTextPaint = {TextPaint@5264}
mTextSelectHandleLeftRes = 17303401
mTextSelectHandleRes = 17303403
mTextSelectHandleRightRes = 17303405
mTransformation = {SingleLineTransformationMethod@5265}
mTransformed = {ReplacementTransformationMethod$SpannedReplacementCharSequence@5266} ""
mUserSetTextScaleX = false
mAccessibilityCursorPosition = -1
mAccessibilityDelegate = null
mAccessibilityTraversalAfterId = -1
mAccessibilityTraversalBeforeId = -1
mAccessibilityViewId = -1
mAnimator = null
mAttachInfo = {View$AttachInfo@5267}
mAttributes = null
mBackground = {InsetDrawable@5268}
mBackgroundRenderNode = {RenderNode@5269}
mBackgroundResource = 0
mBackgroundSizeChanged = false
mBackgroundTint = null
mBottom = 360
mCachingFailed = false
mClipBounds = null
mContentDescription = null
mContext = {LoginActivity@5188}
mCurrentAnimation = null
mDrawableState = {int[4]@5270}
mDrawingCache = null
mDrawingCacheBackgroundColor = 0
mFloatingTreeObserver = null
mForegroundInfo = null
mFrameMetricsObservers = null
mGhostView = null
mHasPerformedLongPress = false
mID = 2131296317
mIgnoreNextUpEvent = false
mInContextButtonPress = false
mInputEventConsistencyVerifier = null
mKeyedTags = null
mLabelForId = -1
mLastIsOpaque = false
mLayerPaint = null
mLayerType = 0
mLayoutInsets = null
mLayoutParams = {LinearLayout$LayoutParams@5271}
mLeft = 79
mLeftPaddingDefined = false
mListenerInfo = null
mLongClickX = NaN
mLongClickY = NaN
mMatchIdPredicate = null
mMatchLabelForPredicate = null
mMeasureCache = {LongSparseLongArray@5272} "{4611689978387236305=3959959847030}"
mMeasuredHeight = 118
mMeasuredWidth = 922
mMinHeight = 0
View.mMinWidth = 0
mNestedScrollingParent = null
mNextFocusDownId = -1
mNextFocusForwardId = -1
mNextFocusLeftId = -1
mNextFocusRightId = -1
mNextFocusUpId = -1
mOldHeightMeasureSpec = 1489
mOldWidthMeasureSpec = 1073742746
mOutlineProvider = {ViewOutlineProvider$1@5273}
mOverScrollMode = 1
mOverlay = null
mPaddingBottom = 29
mPaddingLeft = 10
mPaddingRight = 10
mPaddingTop = 26
mParent = {LinearLayout@5274} "android.widget.LinearLayout{2b0397d V.E...... ........ 0,0-1080,1997 #7f090000 app:id/SignIn_Layout}"
mPendingCheckForLongPress = null
mPendingCheckForTap = null
mPerformClick = null
mPointerIcon = null
mPrivateFlags = 16812082
mPrivateFlags2 = 1611867688
mPrivateFlags3 = 4
mRecreateDisplayList = false
mRenderNode = {RenderNode@5275}
mResources = {Resources@5227}
mRight = 1001
mRightPaddingDefined = false
mRunQueue = {HandlerActionQueue@5276}
mScrollCache = null
mScrollIndicatorDrawable = null
mScrollX = 0
mScrollY = 0
mSendViewScrolledAccessibilityEvent = null
mSendViewStateChangedAccessibilityEvent = null
mSendingHoverAccessibilityEvents = false
mStartActivityRequestWho = null
mStateListAnimator = null
mSystemUiVisibility = 0
mTag = null
mTempNestedScrollConsumed = null
mTop = 242
mTouchDelegate = null
mTouchSlop = 21
mTransformationInfo = {View$TransformationInfo@5277}
mTransientStateCount = 0
mTransitionName = null
mUnscaledDrawingCache = null
mUnsetPressedState = null
mUserPaddingBottom = 29
mUserPaddingEnd = -2147483648
mUserPaddingLeft = 10
mUserPaddingLeftInitial = 10
mUserPaddingRight = 10
mUserPaddingRightInitial = 10
mUserPaddingStart = -2147483648
mVerticalScrollFactor = 0.0
mVerticalScrollbarPosition = 0
mViewFlags = 405028865
mWindowAttachCount = 1
shadow$_klass_ = {Class@5076} "class android.support.v7.widget.AppCompatEditText"
shadow$_monitor_ = -1944738814
(When I gave some value of email)
email = {AppCompatEditText@5199} "android.support.v7.widget.AppCompatEditText{9041f8b VFED..CL. .F...... 79,242-1001,360 #7f09003d app:id/email}"
mBackgroundTintHelper = {AppCompatBackgroundHelper@5250}
mTextHelper = {AppCompatTextHelperV17@5251}
mAllowTransformationLengthChange = false
mAutoLinkMask = 0
mBoring = null
mBreakStrategy = 0
mBufferType = {TextView$BufferType@5252} "EDITABLE"
mChangeWatcher = {TextView$ChangeWatcher@5253}
mCharWrapper = null
mCurHintTextColor = 1627389952
mCurTextColor = -570425344
mCurrentSpellCheckerLocaleCache = null
mCursorDrawableRes = 17303397
mDeferScroll = -1
mDesiredHeightAtMeasure = 118
mDeviceProvisionedState = 0
mDrawables = null
mEditableFactory = {Editable$Factory@5254}
mEditor = {Editor@5255}
mEllipsize = null
mFilters = {InputFilter[0]@5256}
mFreezesText = false
mGravity = 8388627
mHighlightColor = 1711314568
mHighlightPaint = {Paint@5257}
mHighlightPath = {Path@5258}
mHighlightPathBogus = false
mHint = "Email"
mHintBoring = {BoringLayout$Metrics@5260} "FontMetricsInt: top=-50 ascent=-44 descent=11 bottom=13 leading=0 width=116"
mHintLayout = {BoringLayout@5261}
mHintTextColor = {ColorStateList@5262} "ColorStateList{mThemeAttrs=nullmChangingConfigurations=0mStateSpecs=[[16842910, 16842919], []]mColors=[-1979711488, 1627389952]mDefaultColor=1627389952}"
mHorizontallyScrolling = true
mHyphenationFrequency = 1
mIncludePad = true
mLastLayoutDirection = 0
mLastScroll = 0
mLayout = {DynamicLayout@5263}
mLinkTextColor = {ColorStateList@5264} "ColorStateList{mThemeAttrs=nullmChangingConfigurations=0mStateSpecs=[[]]mColors=[-16738680]mDefaultColor=-16738680}"
mLinksClickable = true
mListeners = null
mLocalesChanged = false
mMarquee = null
mMarqueeFadeMode = 0
mMarqueeRepeatLimit = 3
mMaxMode = 1
mMaxWidth = 2147483647
mMaxWidthMode = 2
mMaximum = 1
mMinMode = 1
mMinWidth = 0
mMinWidthMode = 2
mMinimum = 1
mMovement = {ArrowKeyMovementMethod@5265}
mOldMaxMode = 1
mOldMaximum = 1
mPreDrawListenerDetached = false
mPreDrawRegistered = false
mPreventDefaultMovement = false
mRestartMarquee = false
mSavedHintLayout = {BoringLayout@5261}
mSavedLayout = null
mSavedMarqueeModeLayout = null
mScroller = null
mShadowColor = 0
mShadowDx = 0.0
mShadowDy = 0.0
mShadowRadius = 0.0
mSingleLine = true
mSpacingAdd = 0.0
mSpacingMult = 1.0
mSpannableFactory = {Spannable$Factory@5266}
mTempRect = {Rect@5267} "Rect(374, 305 - 378, 423)"
mText = {SpannableStringBuilder@5268} "wfm@dm.ssc"
mTextColor = {ColorStateList@5269} "ColorStateList{mThemeAttrs=nullmChangingConfigurations=0mStateSpecs=[[-16842910], []]mColors=[973078528, -570425344]mDefaultColor=-570425344}"
mTextDir = {TextDirectionHeuristics$TextDirectionHeuristicInternal@5270}
mTextEditSuggestionContainerLayout = 17367285
mTextEditSuggestionHighlightStyle = 16974923
mTextEditSuggestionItemLayout = 17367287
mTextPaint = {TextPaint@5271}
mTextSelectHandleLeftRes = 17303401
mTextSelectHandleRes = 17303403
mTextSelectHandleRightRes = 17303405
mTransformation = {SingleLineTransformationMethod@5272}
mTransformed = {ReplacementTransformationMethod$SpannedReplacementCharSequence@5273} "wfm@dm.ssc"
mUserSetTextScaleX = false
mAccessibilityCursorPosition = -1
mAccessibilityDelegate = null
mAccessibilityTraversalAfterId = -1
mAccessibilityTraversalBeforeId = -1
mAccessibilityViewId = -1
mAnimator = null
mAttachInfo = {View$AttachInfo@5274}
mAttributes = null
mBackground = {InsetDrawable@5275}
mBackgroundRenderNode = {RenderNode@5276}
mBackgroundResource = 0
mBackgroundSizeChanged = false
mBackgroundTint = null
mBottom = 360
mCachingFailed = false
mClipBounds = null
mContentDescription = null
mContext = {LoginActivity@5195}
mCurrentAnimation = null
mDrawableState = {int[4]@5277}
mDrawingCache = null
mDrawingCacheBackgroundColor = 0
mFloatingTreeObserver = null
mForegroundInfo = null
mFrameMetricsObservers = null
mGhostView = null
mHasPerformedLongPress = false
mID = 2131296317
mIgnoreNextUpEvent = false
mInContextButtonPress = false
mInputEventConsistencyVerifier = null
mKeyedTags = null
mLabelForId = -1
mLastIsOpaque = false
mLayerPaint = null
mLayerType = 0
mLayoutInsets = null
mLayoutParams = {LinearLayout$LayoutParams@5278}
mLeft = 79
mLeftPaddingDefined = false
mListenerInfo = null
mLongClickX = NaN
mLongClickY = NaN
mMatchIdPredicate = null
mMatchLabelForPredicate = null
mMeasureCache = {LongSparseLongArray@5279} "{4611689978387236305=3959959847030}"
mMeasuredHeight = 118
mMeasuredWidth = 922
mMinHeight = 0
View.mMinWidth = 0
mNestedScrollingParent = null
mNextFocusDownId = -1
mNextFocusForwardId = -1
mNextFocusLeftId = -1
mNextFocusRightId = -1
mNextFocusUpId = -1
mOldHeightMeasureSpec = 1489
mOldWidthMeasureSpec = 1073742746
mOutlineProvider = {ViewOutlineProvider$1@5280}
mOverScrollMode = 1
mOverlay = null
mPaddingBottom = 29
mPaddingLeft = 10
mPaddingRight = 10
mPaddingTop = 26
mParent = {LinearLayout@5281} "android.widget.LinearLayout{bd21b35 V.E...... ........ 0,0-1080,1997 #7f090000 app:id/SignIn_Layout}"
mPendingCheckForLongPress = null
mPendingCheckForTap = null
mPerformClick = null
mPointerIcon = null
mPrivateFlags = 16812082
mPrivateFlags2 = 1611867688
mPrivateFlags3 = 4
mRecreateDisplayList = false
mRenderNode = {RenderNode@5282}
mResources = {Resources@5234}
mRight = 1001
mRightPaddingDefined = false
mRunQueue = {HandlerActionQueue@5283}
mScrollCache = null
mScrollIndicatorDrawable = null
mScrollX = 0
mScrollY = 0
mSendViewScrolledAccessibilityEvent = null
mSendViewStateChangedAccessibilityEvent = null
mSendingHoverAccessibilityEvents = false
mStartActivityRequestWho = null
mStateListAnimator = null
mSystemUiVisibility = 0
mTag = null
mTempNestedScrollConsumed = null
mTop = 242
mTouchDelegate = null
mTouchSlop = 21
mTransformationInfo = {View$TransformationInfo@5284}
mTransientStateCount = 0
mTransitionName = null
mUnscaledDrawingCache = null
mUnsetPressedState = null
mUserPaddingBottom = 29
mUserPaddingEnd = -2147483648
mUserPaddingLeft = 10
mUserPaddingLeftInitial = 10
mUserPaddingRight = 10
mUserPaddingRightInitial = 10
mUserPaddingStart = -2147483648
mVerticalScrollFactor = 0.0
mVerticalScrollbarPosition = 0
mViewFlags = 405028865
mWindowAttachCount = 1
shadow$_klass_ = {Class@5076} "class android.support.v7.widget.AppCompatEditText"
shadow$_monitor_ = -1996218485
password = {AppCompatEditText@5200} "android.support.v7.widget.AppCompatEditText{8dff868 VFED..CL. ........ 79,400-1001,518 #7f090075 app:id/password}"
mBackgroundTintHelper = {AppCompatBackgroundHelper@5308}
mTextHelper = {AppCompatTextHelperV17@5309}
mAllowTransformationLengthChange = false
mAutoLinkMask = 0
mBoring = null
mBreakStrategy = 0
mBufferType = {TextView$BufferType@5252} "EDITABLE"
mChangeWatcher = {TextView$ChangeWatcher@5310}
mCharWrapper = null
mCurHintTextColor = 1627389952
mCurTextColor = -570425344
mCurrentSpellCheckerLocaleCache = null
mCursorDrawableRes = 17303397
mDeferScroll = -1
mDesiredHeightAtMeasure = 118
mDeviceProvisionedState = 0
mDrawables = null
mEditableFactory = {Editable$Factory@5254}
mEditor = {Editor@5311}
mEllipsize = null
mFilters = {InputFilter[0]@5256}
mFreezesText = false
mGravity = 8388627
mHighlightColor = 1711314568
mHighlightPaint = {Paint@5312}
mHighlightPath = null
mHighlightPathBogus = true
mHint = "Password"
mHintBoring = {BoringLayout$Metrics@5314} "FontMetricsInt: top=-50 ascent=-44 descent=11 bottom=13 leading=0 width=224"
mHintLayout = {BoringLayout@5315}
mHintTextColor = {ColorStateList@5262} "ColorStateList{mThemeAttrs=nullmChangingConfigurations=0mStateSpecs=[[16842910, 16842919], []]mColors=[-1979711488, 1627389952]mDefaultColor=1627389952}"
mHorizontallyScrolling = true
mHyphenationFrequency = 1
mIncludePad = true
mLastLayoutDirection = 0
mLastScroll = 0
mLayout = {DynamicLayout@5316}
mLinkTextColor = {ColorStateList@5264} "ColorStateList{mThemeAttrs=nullmChangingConfigurations=0mStateSpecs=[[]]mColors=[-16738680]mDefaultColor=-16738680}"
mLinksClickable = true
mListeners = null
mLocalesChanged = false
mMarquee = null
mMarqueeFadeMode = 0
mMarqueeRepeatLimit = 3
mMaxMode = 1
mMaxWidth = 2147483647
mMaxWidthMode = 2
mMaximum = 1
mMinMode = 1
mMinWidth = 0
mMinWidthMode = 2
mMinimum = 1
mMovement = {ArrowKeyMovementMethod@5265}
mOldMaxMode = 1
mOldMaximum = 1
mPreDrawListenerDetached = false
mPreDrawRegistered = false
mPreventDefaultMovement = false
mRestartMarquee = false
mSavedHintLayout = {BoringLayout@5315}
mSavedLayout = null
mSavedMarqueeModeLayout = null
mScroller = null
mShadowColor = 0
mShadowDx = 0.0
mShadowDy = 0.0
mShadowRadius = 0.0
mSingleLine = true
mSpacingAdd = 0.0
mSpacingMult = 1.0
mSpannableFactory = {Spannable$Factory@5266}
mTempRect = null
mText = {SpannableStringBuilder@5317} ""
mTextColor = {ColorStateList@5269} "ColorStateList{mThemeAttrs=nullmChangingConfigurations=0mStateSpecs=[[-16842910], []]mColors=[973078528, -570425344]mDefaultColor=-570425344}"
mTextDir = {TextDirectionHeuristics$TextDirectionHeuristicInternal@5318}
mTextEditSuggestionContainerLayout = 17367285
mTextEditSuggestionHighlightStyle = 16974923
mTextEditSuggestionItemLayout = 17367287
mTextPaint = {TextPaint@5319}
mTextSelectHandleLeftRes = 17303401
mTextSelectHandleRes = 17303403
mTextSelectHandleRightRes = 17303405
mTransformation = {PasswordTransformationMethod@5320}
mTransformed = {PasswordTransformationMethod$PasswordCharSequence@5321} ""
mUserSetTextScaleX = false
mAccessibilityCursorPosition = -1
mAccessibilityDelegate = null
mAccessibilityTraversalAfterId = -1
mAccessibilityTraversalBeforeId = -1
mAccessibilityViewId = -1
mAnimator = null
mAttachInfo = {View$AttachInfo@5274}
mAttributes = null
mBackground = {InsetDrawable@5322}
mBackgroundRenderNode = {RenderNode@5323}
mBackgroundResource = 0
mBackgroundSizeChanged = false
mBackgroundTint = null
mBottom = 518
mCachingFailed = false
mClipBounds = null
mContentDescription = null
mContext = {LoginActivity@5195}
mCurrentAnimation = null
mDrawableState = {int[3]@5324}
mDrawingCache = null
mDrawingCacheBackgroundColor = 0
mFloatingTreeObserver = null
mForegroundInfo = null
mFrameMetricsObservers = null
mGhostView = null
mHasPerformedLongPress = false
mID = 2131296373
mIgnoreNextUpEvent = false
mInContextButtonPress = false
mInputEventConsistencyVerifier = null
mKeyedTags = null
mLabelForId = -1
mLastIsOpaque = false
mLayerPaint = null
mLayerType = 0
mLayoutInsets = null
mLayoutParams = {LinearLayout$LayoutParams@5278}
mLeft = 79
mLeftPaddingDefined = false
mListenerInfo = null
mLongClickX = NaN
mLongClickY = NaN
mMatchIdPredicate = null
mMatchLabelForPredicate = null
mMeasureCache = {LongSparseLongArray@5325} "{4611689978387236147=3959959847030}"
mMeasuredHeight = 118
mMeasuredWidth = 922
mMinHeight = 0
View.mMinWidth = 0
mNestedScrollingParent = null
mNextFocusDownId = -1
mNextFocusForwardId = -1
mNextFocusLeftId = -1
mNextFocusRightId = -1
mNextFocusUpId = -1
mOldHeightMeasureSpec = 1331
mOldWidthMeasureSpec = 1073742746
mOutlineProvider = {ViewOutlineProvider$1@5280}
mOverScrollMode = 1
mOverlay = null
mPaddingBottom = 29
mPaddingLeft = 10
mPaddingRight = 10
mPaddingTop = 26
mParent = {LinearLayout@5281} "android.widget.LinearLayout{bd21b35 V.E...... ........ 0,0-1080,1997 #7f090000 app:id/SignIn_Layout}"
mPendingCheckForLongPress = null
mPendingCheckForTap = null
mPerformClick = null
mPointerIcon = null
mPrivateFlags = 16812080
mPrivateFlags2 = 1611867688
mPrivateFlags3 = 4
mRecreateDisplayList = false
mRenderNode = {RenderNode@5326}
mResources = {Resources@5234}
mRight = 1001
mRightPaddingDefined = false
mRunQueue = null
mScrollCache = null
mScrollIndicatorDrawable = null
mScrollX = 0
mScrollY = 0
mSendViewScrolledAccessibilityEvent = null
mSendViewStateChangedAccessibilityEvent = null
mSendingHoverAccessibilityEvents = false
mStartActivityRequestWho = null
mStateListAnimator = null
mSystemUiVisibility = 0
mTag = null
mTempNestedScrollConsumed = null
mTop = 400
mTouchDelegate = null
mTouchSlop = 21
mTransformationInfo = {View$TransformationInfo@5327}
mTransientStateCount = 0
mTransitionName = null
mUnscaledDrawingCache = null
mUnsetPressedState = null
mUserPaddingBottom = 29
mUserPaddingEnd = -2147483648
mUserPaddingLeft = 10
mUserPaddingLeftInitial = 10
mUserPaddingRight = 10
mUserPaddingRightInitial = 10
mUserPaddingStart = -2147483648
mVerticalScrollFactor = 0.0
mVerticalScrollbarPosition = 0
mViewFlags = 405028865
mWindowAttachCount = 1
shadow$_klass_ = {Class@5076} "class android.support.v7.widget.AppCompatEditText"
shadow$_monitor_ = -1998587800
最佳答案
我已经使用 password.text.toString().isNullOrEmpty() 来达到预期的结果。
不知道为什么 email.text == null 有效，但 password.text == null 无效。欢迎任何建议
关于android - 'when' 语句在 Kotlin for Android 中跳过条件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45437075/